test: add test for small values

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---

Author: aayush0325

lib/node_modules/@stdlib/lapack/base/dgebal/test/test.dgebal.js

@@ -609,3 +609,73 @@ tape( 'the function returns expected values for job = S with zero norm (column-m
 	t.deepEqual( scale, expectedScale, 'returns expected value' );
 	t.end();
 });
+
+tape( 'the function returns expected values for job = S with small values (row-major)', function test( t ) {
+	var expectedScale;
+	var expectedOut;
+	var expectedA;
+	var scale;
+	var info;
+	var out;
+	var A;
+
+	A = new Float64Array([
+		1.0e-4, 1.0, 2.0, 1.0e4,
+		2.0e-4, 1.0, 2.0, 2.0e4,
+		3.0e-4, 1.0, 2.0, 3.0e4,
+		4.0e-4, 1.0, 2.0, 4.0e4
+	]);
+	out = new Float64Array( 2 );
+	scale = new Float64Array( 4 );
+
+	expectedOut = new Float64Array( [ 0.0, 3.0 ] );
+	expectedScale = new Float64Array( [ 4096.0, 128.0, 128.0, 1.0 ] );
+	expectedA = new Float64Array([
+		1.0e-4, 3.125e-2, 6.25e-2, 2.44140625,
+		6.4e-3, 1.0, 2.0, 1.5625e+2,
+		9.6e-3, 1.0, 2.0, 2.34375e+2,
+		1.6384, 1.28e+2, 2.56e+2, 4.0e+4
+	]);
+
+	info = dgebal( 'row-major', 'S', 4, A, 4, out, scale );
+	t.strictEqual( info, 0, 'returns expected value' );
+	t.deepEqual( out, expectedOut, 'returns expected value' );
+	t.deepEqual( A, expectedA, 'returns expected value' );
+	t.deepEqual( scale, expectedScale, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function returns expected values for job = S with small values (column-major)', function test( t ) {
+	var expectedScale;
+	var expectedOut;
+	var expectedA;
+	var scale;
+	var info;
+	var out;
+	var A;
+
+	A = new Float64Array([
+		1.0e-4, 2.0e-4, 3.0e-4, 4.0e-4,
+		1.0, 1.0, 1.0, 1.0,
+		2.0, 2.0, 2.0, 2.0,
+		1.0e4, 2.0e4, 3.0e4, 4.0e4
+	]);
+	out = new Float64Array( 2 );
+	scale = new Float64Array( 4 );
+
+	expectedOut = new Float64Array( [ 0.0, 3.0 ] );
+	expectedScale = new Float64Array( [ 4096.0, 128.0, 128.0, 1.0 ] );
+	expectedA = new Float64Array([
+		1.0e-4, 6.4e-3, 9.6e-3, 1.6384,
+		3.125e-2, 1.0, 1.0, 1.28e+2,
+		6.25e-2, 2.0, 2.0, 2.56e+2,
+		2.44140625, 1.5625e+2, 2.34375e+2, 4.0e+4
+	]);
+
+	info = dgebal( 'column-major', 'S', 4, A, 4, out, scale );
+	t.strictEqual( info, 0, 'returns expected value' );
+	t.deepEqual( out, expectedOut, 'returns expected value' );
+	t.deepEqual( A, expectedA, 'returns expected value' );
+	t.deepEqual( scale, expectedScale, 'returns expected value' );
+	t.end();
+});